Improvement in dies for making felly-plates



UNITED STATES PATENT Crimes.

ALLISONiN. CLARK, OF PLAINVILLE, CONNECTICUT.`

IMPROVEMENT IN DIES FOR MAKING FELLY-PLATES.

Specification forming part of Letters Patent No. l l l, L77, datedJanuary 24, 1871.

To all whom it may concern,.- A

Be it known thatI, A. N. CLARK, of Plainville, in the county ofHartford, and in the State of Connecticut, have invented certain new anduseful Dies for Felly-Plates; and I do hereby declare that the followingis a full, clear,

and exact description thereof, reference being had to theaccompanyingidrawngs, making a part of this specification, in which-Figure l is a perspective View of the die for thinning the edges ofthefelly-plate; Fig. 2, a vertical central cross-sect1on of the same; Fig.3, a plan view of the plate before the edges y are thinned; Fig. 4, aplan View of the plate lthe top center ot' which is a depression, a, of

lozenge forni with rounded extremities, the sides and ends bevelinguniformly inwardly at an angle of about forty-live degrees either instraight or curved lines, and the bottom being upon a horizontal plane,the whole interior conformation corresponding precisely with theexterior of the plate presented in Fig. 4, or With edges a littlecurved.

B represents the felly-plate, having beveled, straight, or curved edgesb, sloped at an angle of about forty-ve degrees, and having at eitherend holes c, by which it is secured to the felly.

In the operation of my device the felly-plate is first cut out ofsuitable sheet metal, as shown in Fig. 8, and this blank placed upon thedepression a in the block A, Where it is forced into said depression bybeing subjected toV pressure under a drop or between rolls, or in anyother convenient method. After this pressure is applied to the blank. itwill be found that its edges are beveled. in correspondence with theinterior shape.` of the depression. The plate is afterward iinished, bymeans of suit-able dies and swage-s, into the form shown in Fig. 5, whenit is ready for use. The plate thus completed will have beveled,straight, or curved sharp edges onits outer side, and when placed inpositionon the wheel its edges will press closely to the felly.

The advantage of the die consists in the cheapness and Vuniformity withwhich the edges of the plate may be thinned, and the advantages of theirthinned edges consists in their neatness of appearance, which is amatter of consequence in fine carriages, and in the close finish itsecures between the edge of theplate and the felly7 thus avoiding thedanger of tearing off the plates, which frequently oc` curs in thecrossing of railroad-tracks diagonally. Y

- Having thus set out the nature, description, and merits of myinvention, what I claim as new therein is- For use jointly with aplain-faced drop or hammer, the die-block A, provided with thedepression a, of the form and with the beveled or sloping margin hereindescribed and shown.

In testimony that I claim the foregoing I have hereunto set my hand this26th day of November, 1870.

ALLISON N. CLARK.

Witnesses:

H. S. CLARK,

Guo. D. CLARK.

